oilman



F. GILMAN. Heat'ng Stove@ No.` 68,731.v

.Patenrdfsept 10, 1867,

000.000 l ll n I i @einen tufee atwt ffice' F. GILMA 0 F MINNEA P0111 s,MINNESOTA Letters Patent No. 68,731, dated 'S'cptember 10, 1867vanledatcd 4S'eptenibei' 4, 186i. V`

eoAL-srove.

TO IJL WHOM IT MAY CONGERN:

`Be itknown that I, F. GILMAN, of Minneapolis, Hennepin county,-Minnesota, have invented'an Improve-` ment in Stoves; 'and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art to make and use thesame,` reference being had to the accompanying drawings, forming part ofthis specification. l

This invention relates to the manner in which the sides and end platesof the stove are formed, and the invention consists iii-constructing thesides and end, and also the top and bottom plates of the stove, in sucha manner theta series of vertical Aair-tubes shall surround the stove,and also in the arrangement of the ash-pit and grate, in combinationwith a heating-stove, in the manner hereinafter described.

Figure l represents a longitudinal section of the stove through the liucx :a: of fig. 3.'

Figure 2 is a horizontal section through the line y y of iig, I.

Figure 3 is a plan or top View. 4

Figure-4 shows `an edge View of one of the side plates.

Similar letters of referenceindieate corresponding parts.

The principal feature ofmy invention is in providing for the passage of'currents of air through channels formed by the side and'. end plates ofthe stove in the manner hereinafter set forth, thus increasing theheating,

surface of thc stove to `a very great extent. For this purpose Iconstruct the side plates and the back end plate `each of two separatepieces, either of' cast or sheet ironT In either'cuse each half of thevertical platos named is corrugated, so as to form a series of groovesor channels extending across their Width or height. When two of theseplates are put together the grooves or channels so coincide, and theiredges matclu'that tubes will he formed. It is not important that thesetubes should be round. The sides may be so cast or made that square,

: 0r angular, or any other shaped holes may be used. The lower edges offtlese side plates are fitted in the usual manner within a flange castor formed on the bottom plate, and the'upper edges are fitted in likemanner u'ithin a ilangc on the under side of the top plate. p Throughthe bottom and also through thev top plate of the stove there are holesto correspond with the tubes formed as-above by the sides and endplates, so that the currents of air pass from under the stove upwardthrough the heated sides, and are discharged in a highly heated stateabove the stove. V r i Arepresents the top of the stovefand the sides,as thc stove appears when' complete. The stove is put together intheusual manner. The novelty consists in providing for currents of airto pass upward through the heated sides, as heretofore described, and inthe arrangement of the ash-pitand grate. vC represents the ushpit, and Dthe gta-te. For the purpose of overcoming many of'the dilicultiesncideutto the use ofthe common hcating-stovc, I attach a deep ash-pit tomy st ove and place a grate above it, which grate is removable. Erepresents bars, upon which the gratel rcsts at each end of thetire-place. The Width of the grate and ash-pit is shown in thehorizontal section, iig. 2.` It will be seen that this arrangement doesnot in any manner interfere with the formation ofthe sides andotherplates of the stove, as already described.

lI claim as new, and desire to secure by Letters Patent-4- 4 I.Constructing the side and end plates of a stove in two parts each, insucha mannerI that when the 'parts are put together air-tubes orapertures shall beformed'hetween them, substantially as hereindescribed.

2. The construction and arrangement of the perforated top and bottomplates, and channelled or corrugated side plates, as herein set forthYfor the purpose specific-d. i

3. I also claim the sunken ash-pit and the grate, in combination withnheating-stove, constructed :unl arranged substantially as shown anddescribed.

The above specification of my invention signed by inc this twenty-ninthday of August, 1866.

` F. GILMAN.

Witnesses:`

I'. 'ORLIN HAYDEN, A. W. LATHAM.

